So my new setup will be a 2.76 upper, 4# lower, billetflow idlers (3 100 and 1 92) and the 3.2 alt pulley. I checked Billetflow's site but they had the belt size with ???? in it. Any help would be great, thanks.
http://www.svtperformance.com/forum.../701866-2-76-4lb-lower-3-2-alt-belt-size.html
Found this thread, looks like 78 5/8 or 79 will work and are tight. Basically same setup as the #3 poster and he mentions dropping from an 80" to a 79".